Question

Definition of pure substance and examples

Answer 1

Well A pure substance is a chemical. 
Like Tin, sulfur, and diamond are some of the pure substances. 
hope this helps if you need more help message me and i will help you. 
-Anna  

Answer 2

a pure substance is one which is made up of only one kind of particle . a pure substance is homogeneous throughout its mass. a pure substance cannot be separated into other kind of matter by and physical process.

types of pure substance .

element ,
compound , etc.

examples :-

gold ,
sugar,
silver,
salt,
platinum, etc.